Device for positioning electrically conductive segments of a winding of a stator

Abstract

A device for positioning electrically conductive segments of a winding of a stator of a rotary electrical machine, including at least one rotative ring with at least one cam arranged around a revolution axis, the rotative ring being arranged to set in a radial motion at least two series of fingers to ensure the position of the conductive segments, wherein the two series of fingers are set in motion in opposite directions one to the other, such that a finger of a first series of fingers and a finger of a second series of fingers are configured to press two conductive segments of a pair of segments against each other.

The invention claimed is: 
     
       1. A device for positioning electrically conductive segments of a winding of a stator of a rotary electrical machine, comprising:
 at least one rotative ring with at least one cam arranged around a revolution axis, the at least one rotative ring being arranged to set in a radial motion at least two series of fingers to ensure the position of the conductive segments, wherein the at least two series of fingers are set in motion in opposite directions one to the other, such that a finger of a first series of fingers and a finger of a second series of fingers are configured to press two conductive segments of a pair of segments against each other; and 
 a circular support with a plurality of guiding grooves configured to receive the series of fingers, wherein the first series of fingers and the second series of fingers are arranged in the plurality of guiding grooves such that the fingers of the first series of fingers and the fingers of the second series of fingers are arranged one to the other according to an alternate manner. 
 
     
     
       2. The device according to  claim 1 , comprising a first rotative ring and a second rotative ring, the first rotative ring being configured to set in a radial motion both the first series of fingers and the second series of fingers, the second rotative ring being configured to set in a radial motion a third series of fingers. 
     
     
       3. The device according to  claim 2 , wherein the third series of fingers is configured to radially align the segments of each pair of segments. 
     
     
       4. The device according to  claim 2 , wherein each finger of the third series of fingers comprises a shoulder configured to participate to the pressing of two conductive segments of a pair of segments against each other. 
     
     
       5. The device according to  claim 2 , wherein the first rotative ring comprises a first cam which is configured to cooperate with each finger of the first series of fingers and a second cam which is configured to cooperate with each finger of the second series of fingers. 
     
     
       6. The device according to  claim 5 , wherein the first cam and the second cam have a circular and concentric form with ripples. 
     
     
       7. The device according to  claim 5 , wherein the first cam and the second cam are angularly offset one to the other, such offset being configured to shift time of the movement of the first series of fingers relative to the movement of the second series of fingers. 
     
     
       8. The device according to  claim 2 , wherein the second rotative ring comprises a plurality of curved cams regularly and angularly distributed. 
     
     
       9. The device according to  claim 2 , wherein the circular support is inserted between the first rotative ring and the second rotative ring. 
     
     
       10. The device according to  claim 2 , wherein each guiding groove is configured to receive a finger of the third series of fingers and a finger of one of the first or the second series of fingers. 
     
     
       11. The device according to  claim 10 , wherein the third series of fingers comprises long fingers and short fingers, such long fingers being superposed to the fingers of the first series of fingers in each guiding groove, such short fingers being superposed to the fingers of the second series of fingers in each guiding groove. 
     
     
       12. The device according to  claim 1 , wherein each finger of the first series of fingers and of the second series of fingers comprises a plurality of transversal protrusions.